{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "The discrepancy must be attributed , primarily , to the small number of subjects in the various studies , the type of selected phenotype , and the number of searched mutations ."}
{"Chemical": []}